Summation current transformer for the universal current-sensitive detection of an electrical differential current

摘要

The summation current transformer is used for the universal current sensitive detection of an electrical differential current. It comprises an outer partition (20), at least one through-hole (24) for the monitored primary conductors, two magnetic cores (2, 3) each provided with a secondary winding (6, 7) and a magnetic shield (10, 11) between the partition (10). 20) and the two magnetic cores (2, 3). The magnetic shield (10, 11) allows higher rated currents in the primary conductors.